Turns out Twitter is even more politically polarized than you thought

As part of a new study on Twitter’s network structures, the Pew Research Center and the Social Media Research Foundation tracked a single hashtag related to America’s budget conflict over two days. What the researchers found are “large dense groups that have little inter-connection or bridge between them.”
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In the map below, the cluster to the right is the “liberal group” and the one to the left the “conservative group.” Not only do they rarely talk to each other, they also use different hashtags and link to different websites within their tweets. Only the rare user, such as @YasserMohamed2 (now suspended) has links to both groups. Unsurprisingly, researchers call this a “polarized crowd.” It is one of six archetypical network structures they found to exist on Twitter.